Ukuthukuthela
I-Tempering, nge-metallurgy, inqubo yokuthuthukisa izici zensimbi, ikakhulukazi insimbi, ngokuyifudumeza ekushiseni okuphezulu, nakuba ingaphansi kwendawo yokuncibilika, bese uyipholisa, ngokuvamile emoyeni.
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MAYELANA NATHI
Ikheli lakho le-imeyili ngeke lishicilelwe. Izinkambu ezidingekayo zimakwe nge *